Diplectanidae
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| Pseudorhabdosynochus morrhua | |
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Diplectanidae
Monticelli, 1903
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The Diplectanidae are a family of monopisthocotylean monogeneans. They are all parasitic on the gills of fish (marine or freshwater). Diplectanids are small animals, generally around 1 mm in length. As parasites, they can be extremely numerous, up to several thousand on an individual fish.
History
The family Diplectanidae was proposed by the Italian parasitologist Monticelli in 1903 (as subfamily Diplectaninae).[1] The status of the family and its components was later examined by various authors, including Johnston & Tiegs (1922),[2] Price (1937),[3] Bychowsky (1957),[4] Yamaguti (1963),[5] and Oliver (1987).[6]
Morphology
Diplectanids are diagnosed by the combination of these three characters:
- Presence of accessory adhesive organs on dorsal and ventral part of the haptor, called squamodiscs when they are made up of rodlets and lamellodiscs when they include lamellae
- In the haptor, three transversal bars (one ventral, two lateral (dorsal), connected to two pairs of hooks (one pair dorsal, one pair ventral)
- A germarium (or ovary) which is anterior to the testis and loops around the right intestinal caecum
Included genera
The 32 genera recognized in WorMs are:
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References
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- ↑ Monticelli, F.C. (1903) Per una nuova classificazione degli “Heterocotylea”. Monitore Zoologico Italiano, 14, 334–336.
- ↑ Johnston, T.H. & Tiegs, O.W. (1922) New Gyrodactyloid Trematodes from Australian fishes together with a reclassification of the Super-Family Gyrodactyloidea. Proceedings of the Linnean Society of New South Wales, 47, 83–131. PDF on BHL
- ↑ Price, E. W. 1937: North American Monogenetic Trematodes. I. The superfamily Gyrodactyloidea. Journal of the Washington Academy of Sciences, 27, 146-164. PDF
- ↑ Bychowsky, B. E. (1957) Monogenetic Trematodes. Their systematic and phylogeny. Akad. Nauka. USSR. English translation by the American Institute of Biological Science, Washington. 509 pp.doi:10.5962/bhl.title.7475
- ↑ Yamaguti, S. (1963) Systema Helminthum IV. Monogenea and Aspidocotylea. London-New York, Interscience Publishers. 699 pp.
- ↑ Oliver, G. (1987). Les Diplectanidae Bychowsky, 1957 (Monogenea, Monopisthocotylea, Dactylogyridea). Systématique. Biologie. Ontogénie. Écologie. Essai de phylogenèse. Thèse d'État, Académie de Montpellier, Université des Sciences et Techniques du Languedoc, France. doi:10.6084/m9.figshare.1295274
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